US20100208373A1 - Vehicle Side View Mirror System - Google Patents
Vehicle Side View Mirror System Download PDFInfo
- Publication number
- US20100208373A1 US20100208373A1 US12/643,275 US64327509A US2010208373A1 US 20100208373 A1 US20100208373 A1 US 20100208373A1 US 64327509 A US64327509 A US 64327509A US 2010208373 A1 US2010208373 A1 US 2010208373A1
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- US
- United States
- Prior art keywords
- mirror
- vehicle
- view
- double curved
- view mirror
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/10—Front-view mirror arrangements; Periscope arrangements, i.e. optical devices using combinations of mirrors, lenses, prisms or the like ; Other mirror arrangements giving a view from above or under the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/002—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles specially adapted for covering the peripheral part of the vehicle, e.g. for viewing tyres, bumpers or the like
Abstract
A mirror assembly for a vehicle that has a double curved mirror positioned next to a vehicle side view mirror and said double curved mirror along with said side view mirror allows a user to view the lower perimeter of the vehicle in the side view mirror while operating the vehicle.
Description
- This application is a continuation-in-part of U.S. patent application Ser. No. 11/592,361, filed Nov. 3, 2006 which claims the benefit of provisional U.S. Patent Application Ser. No. 60/734,213 filed Nov. 7, 2005, entitled “Vehicle Side View Mirror Accessory” the disclosures of which incorporated herein by reference in their entirety.
- 1. Description of the Prior Art
- The present invention relates generally to mirror assemblies for vehicles.
- U.S. Pat. No. 5,119,236 shows a mirror assembly attached to an airplane for viewing objects distant from the airplane. The application discloses a system for solving the problem caused by submerged cockpits within high speed aircraft. Because of the submersion in the cockpit, the nose of the aircraft often severely limits the field of view of the pilot. Thus, the patent discloses a mirror assembly for displaying the field of view blocked by the nose of the aircraft. The art does not disclose a system for viewing an area near and at the lower perimeter of the vehicle.
- U.S. Pat. No. 4,685,779 discloses a mirror assembly which provides an enhanced view to the automobile driver of objects located beyond the forward end of the automobile and, in particularly, beyond a preceding vehicle. A mirror is mounted on a side opposite another mirror and serves as a side disposed rearview mirror. Thus, the system is not designed to provide the operator with a view of an area located at the lower perimeter of the vehicle.
- 2. Brief Summary of the Invention
- This invention pertains to a mirror assembly having a reflecting mirror which is mounted below and facing the side view mirror of a vehicle. The reflecting mirror permits a driver to view an image of an area along the lower perimeter of the vehicle. Often, owners of vehicles need to position the vehicle close to a boundary or within a predetermined location. For example, owners of automobiles must park their cars in parking spaces, thus requiring them to park the vehicle between two predetermined parking lines. To perform this task, it is particularly advantageous to be able to view an area along the lower perimeter of the vehicle to appropriately park or position the vehicle in the desired area. In this manner, the owner of the vehicle is able to determine the precise distance between the vehicle and the parking lines. Furthermore, this invention is useful for any task, not just parking, in which the vehicle operator requires a view of a section along the lower perimeter of the vehicle in order to perform a task.
- According to the invention, the vehicle has a side view mirror. A reflecting mirror is mounted on the vehicle below the side view mirror and facing the side view mirror such that the reflecting mirror is oriented to reflect an image along the lower perimeter of the vehicle. Normally, to assist in parking, the image reflected into the vehicle is of an area surrounding the front tire of the vehicle. This provides the driver with a view of the exact distance between the vehicle and the parking line. The reflecting mirror may be mounted either on the side view mirror or, preferably, on a vehicle body panel.
- Accordingly, one object of the present invention is to provide a vehicle operator with a view along the lower perimeter of the vehicle.
- Another object of the present invention is to provide the driver of an automobile with a view along the lower perimeter of the vehicle.
- Yet another object of the present invention is to assist the operator of a vehicle with the parking of the vehicle.
- Still another object of the present invention is to display an image to vehicle operator of an area surrounding the front tire of the vehicle.
- In one embodiment the present invention is a vehicle mirror assembly system, comprising:
-
- a vehicle having a side view mirror; and
- a double curved reflecting mirror mounted on the vehicle below said side view mirror and having a reflective surface facing the said side view mirror, the said double curved reflecting mirror being oriented to reflect an image of an area along a lower perimeter of the a vehicle on the side view mirror such that the said image is viewable by a driver operating the vehicle, wherein the area includes the front tire.
- The system double curved mirror is in a housing and said housing is attached to a vehicle side view mirror or a vehicle side view mirror housing.
- The double curved mirror has a first curvature along a vertical axis and a second curvature along a horizontal axis.
- The first curvature and said second curvature being of unequal degrees of curvature.
- The double curved mirror is in a housing that is adjustable.
- The present invention is also a method of viewing an area along the lower perimeter of a vehicle with a side view mirror while operating the vehicle, comprising:
-
- providing a double curved reflecting mirror attached to a vehicle side view mirror, said double curved mirror having a reflective surface facing a vehicle side view mirror; and
- reflecting an image of an area onto the side view mirror with said double curved reflecting mirror such that a vehicle operator in a vehicle operating position can view said image; wherein said image includes a surface on which said vehicle resides.
-
FIG. 1A is a side view of the vehicle mounted with one embodiment of the vehicle mirror assembly with the reflecting mirror assembly attached to a body side panel. -
FIG. 1B is a front perspective view of one embodiment of the vehicle mirror assembly ofFIG. 1A . -
FIG. 1C is an anterior perspective view of one embodiment of the vehicle mirror assembly ofFIG. 1A . -
FIG. 1D is a side view of a second embodiment of the vehicle mirror assembly with the reflecting mirror attached to the side view mirror. -
FIG. 2A is a front view of one embodiment of the reflecting mirror assembly. -
FIG. 2B is a side view of the reflecting mirror assembly of 2A showing the attaching lateral surface. -
FIG. 2C is an opposite side view of the reflecting mirror assembly ofFIG. 2A showing the side opposite the attaching lateral surface. -
FIG. 2D is a rear view of the reflecting mirror assembly ofFIG. 2A . -
FIG. 2E is a top view of the reflecting mirror assembly ofFIG. 2A . -
FIG. 3 is a perspective view of the reflecting mirror assembly ofFIG. 2A attached to a vehicle body panel. -
FIG. 4 is a top view of a vehicle with the vehicle mirror assembly ofFIG. 1A while the vehicle is parked in a parking location. -
FIG. 5 is a diagrammatic schematic of one embodiment showing field of vision from a side view mirror to a double curved mirror and to the ground. -
FIG. 6 is a side view showing a driver and field of vision alongside a car. -
FIG. 7 is a top view showing a driver and field of vision alongside each side of a car. -
FIG. 8 is a side view showing a driver and field of vision alongside a car. -
FIG. 9 is a close up side view of a side view mirror and a double curved mirror attached thereto. -
FIG. 10 is a cross section along section lines A-A fromFIG. 9 . -
FIG. 11 is a front view looking into a vehicle side view mirror with a double curved mirror of the present invention attached thereto. -
FIG. 12 is a top view looking into a vehicle side view mirror with a double curved mirror of the present invention attached thereto. -
FIG. 13 is a front view looking into a vehicle side view mirror with a double curved mirror of the present invention attached thereto. -
FIG. 14 is a side cross section view along section lines B-B fromFIG. 13 showing a vehicle side view mirror with a double curved mirror of the present invention in a pivotable housing, wherein said housing has a base attached to the vehicle side view mirror. -
FIG. 15 is a top view of a side view mirror on the passenger side of a vehicle with a double curved mirror of the present invention attached thereto. -
FIG. 16 is a front diagrammatic view of a double curved mirror having a vertical and horizontal axis. -
FIG. 17 is a cross section along section lines C_C fromFIG. 16 . -
FIG. 18 is a cross section along section lines D-D fromFIG. 16 . -
FIG. 19 is a side view of lines of reflection in a convex mirror. -
FIG. 20 is a side view showing convex mirror in relation to a vehicle side view mirror. - Referring now to
FIGS. 1A , 1B, 1C, and 1D, avehicle 10 is shown having aside view mirror 12. As is known, aside view mirror 12 is a functional type of mirror found on vehicles, designed to allow the driver to see an area lateral to and behind the vehicle. Thus, side view mirrors are designed to allow a driver to view objects which are distant and behind the car thereby increasing the driver's field of view. However, these mirrors are not designed to display an image along a lower perimeter of thevehicle 10. An image along the lower perimeter of thevehicle 10 is advantageous for many tasks during operation of the vehicle including, and in particular, the parking of thevehicle 10. - In order to provide this advantage, a reflecting
mirror 14 is mounted on thevehicle 10 below theside view mirror 12 and facing theside view mirror 12. In this manner, the reflectingmirror 14 is oriented to reflect an image of anarea 16, along a lower perimeter of thevehicle 10, on theside view mirror 12. This image is viewable by thedriver 50, operating thevehicle 10, and thus provides thedriver 50 with a method of viewing a lower perimeter of thevehicle 10 while performing a required task. - In this application, the
vehicle 10 may be any vehicle which may be equipped with aside view mirror 12. Thus, the vehicle may be an automobile, an airplane, a boat, a ship, a bicycle, a motorcycle, a truck, including an eighteen wheeler truck, a humvee, or a locomotive. - In particular, the
area 16 for viewing along the lower perimeter of thevehicle 10 may comprise afront tire 18 mounted on thevehicle 10. By reflecting this image into theside view mirror 12, thedriver 50 can judge the distance between thevehicle 10 and a particular boundary location. Referring particularly toFIGS. 1A and 1D , the reflectingmirror 14 may be mounted on theside view mirror 12 or on abody panel 20 of thevehicle 10. In the preferred embodiment, the reflectingmirror 14 is mounted on thebody panel 20 of thevehicle 10 because this provides a user with a greater degree of freedom as to thearea 16 along the lower perimeter of thevehicle 10 to view in theside view mirror 12. - Referring now to
FIGS. 2A to 2E , a reflecting mirror assembly which attaches to avehicle body panel 20 is shown. As can be seen in the figures, the reflecting mirror assembly has ahousing 22 having a lateral surface 24 and anopen face 26. The lateral surface 24 includes anattachment device 36 for attaching the assembly to thevehicle body panel 20. Thepreferred attachment device 36 is a pressure sensitive adhesive. However, any device for attaching a mirror assembly to abody panel 20 may be utilized. For example, the reflecting mirror assembly may use screws for attachment or may be welded to thebody panel 20. As is shown inFIGS. 2B and 2E , the lateral surface 24 is normally a flatlateral surface 24A for attaching the reflecting mirror assembly substantially flush with thevehicle body panel 20. By providing a reflectingmirror 14 flush with abody panel 20, the projection of the reflectingmirror 14 out from thebody panel 20 is reduced thereby increasing the aerodynamics of the reflecting mirror assembly. The reflectingmirror 14 is mounted within theopen face 26 for viewing the selectedarea 16 within theside view mirror 12. - This reflecting mirror assembly design is constructed to maximize the aerodynamics of the mirror assembly when the mirror assembly is attached to the
body panel 20. As is shown in 2A, theopen face 26 is designed such that a greater portion of thearea 38 of theopen face 26 is toward thebody panel 20 thereby decreasing the drag coefficient of the mirror assembly. For example, theopen face 26 is extended over anarea 38 having atop edge 40, abottom edge 42, a lateralbody panel edge 44, which is next to thebody panel 20, and a secondlateral edge 46 opposite the lateralbody panel edge 44. The lateral edges 44 and 46, are longer than the top andbottom edges area 38 toward thebody panel 20. - As is shown in
FIG. 2A , theopen face 26 may be the same shape as the reflectingmirror 14 thereby further increasing the aerodynamics of the reflecting mirror assembly. Furthermore, thehousing 32 is shaped in an aerodynamic configuration in order to further reduce the drag coefficient of the mirror assembly. As is shown inFIGS. 2B through 2E , thehousing 22 may be shaped in a streamline half-body configuration 28 with abase 30. A streamline configuration is a body shape which reduces the turbulence of a fluid or gas passing across the body. In streamline bodies, the current of fluid flow that a streamline body breaks tends to reunite in its wake, as contrasted with the turbulence created by the partial vacuums and eddies in the wake of a non-streamline body. A streamline design is typically a long ellipse like configuration tapering to a point in the direction of thebase 30. Thebase 30 of the streamline half-body configuration 28 may comprise the flatlateral surface 24A. - Furthermore, the streamline half-
body configuration 28 may be shaped in a substantially half-conic configuration 34. A half-conic configuration 34 may further comprise a bluntednose 48 at the point of tapering in the direction of air flow thereby furthering decreasing the drag coefficient of the mirror assembly. - Referring now to
FIG. 3 , the reflecting mirror assembly ofFIGS. 2A-2E is shown attached to thevehicle body panel 20. Thecrest 32 of the streamline half-body configuration may be perpendicular to aline 35 normal to thevehicle body panel 20. In this manner, the design maximizes the aerodynamics of the mirror assembly when the mirror assembly is attached to thevehicle body panel 20. - Referring now to
FIG. 4 , the advantages of utilizing the invention to park avehicle 10 provided with aside view mirror 12 are shown. As is shown by the figure, an image of thearea 16 along the lower periphery of thevehicle 10 is reflected onto theside view mirror 12. This area may include at least a portion of one of thefront tires 18. When thevehicle operator 50 moves thevehicle 10 toward theparking location 54 while in a vehicle operator position 52, the driver can view the image of thearea 16 on theside view mirror 12. In this manner, thevehicle operator 50 can determine the distance between thevehicle 10 and the set of parking lines 56. If thevehicle 10 is being placed within the set ofparking lines 56, an image showing the appropriate spacing between theparking lines 56 and thevehicle 10 is shown. Otherwise, thevehicle operator 50 will again move thevehicle 10 until thevehicle 10 is placed within the set of parking lines 56. - Another embodiment of the present invention is set forth in
FIGS. 5-18 . The present invention is a curved mirror used with existing vehicleside view mirror 12. Although the figures and explanation relate to a double curved mirror, is contemplated that various curved configurations including, but not limited to convex, parabolic and spherical. The curved mirror is convex, spherical, or double curved.FIGS. 16-18 demonstrate a simplified schematic of a doublecurved mirror 62.FIG. 16 is a front view of doublecurved mirror 62. Doublecurved mirror 62 has avertical axis 64 and ahorizontal axis 66.FIGS. 17 and 18 are not drawn to scale.FIG. 17 shows doublecurved mirror 62 having avertical curvature 74 along the outer reflective surface of doublecurved mirror 62.FIG. 18 shows doublecurved mirror 62 having ahorizontal curvature 76 along the outer reflective surface of doublecurved mirror 62. Doublecurved mirror 62 is configured with size and degree of curvature depending on the length of vehicle and the desired size ofsurface viewing area 70. - The double
curved mirror 62 of the present invention is an improvement over prior flat and curved mirrors because the double curved mirror reflects an image that is longer in one axis than the other and therefore presents an elongated field of view to a flat mirror surface, thus allowing a larger area to be viewed at a shorter distance. Flat mirror to flat mirror reflections are limited in viewing areas and oncoming head lights can be blinding to a driver. The doublecurved mirror 62 of the present invention eliminates unwanted reflection due to orientation in relation to the driver, as seen in the embodiment ofFIGS. 5 , 9, 12, doublecurved mirror 62 is positioned on a forward angular offset such that oncoming headlights are not reflected into doublecurved mirror 62. -
FIG. 5 shows a schematic of the system. Theeye 60 of a driver 50 (shown inFIG. 1A ) has a firstline viewing area 64. Firstline viewing area 64 allowsdriver 50 to viewside view mirror 12. First reflected line ofsight 66 is reflected off ofside view mirror 12 and towards doublecurved mirror 62. Second reflected line ofsight 68 is reflected off of doublecurved mirror 62 and allowsdriver 50 to see driver side viewing area 70 (FIG. 7 ).Driver 50 also has a passenger side firstline viewing area 72 in which a doublecurved mirror 62 mounted onside view mirror 12 on the passenger side ofvehicle 10 providesdriver 50 the ability to view passengerside viewing area 80. -
FIG. 9 is a side view of doublecurved mirror 62 mounted onside view mirror 12.Line 82 represents a vertical line with respect to a substantially horizontal orientation ofvehicle 10. Doublecurved mirror 62 is oriented towards the front ofvehicle 10 such that the back,non-reflective surface 84 of doublecurved mirror 62 forms a forward offset angle “x” relative toline 82. In a preferred embodiment, the measure of angle “x” is 30-60°. Because doublecurved mirror 62 is not vertically oriented, light from oncoming car headlights will not reflect ontoside view mirror 12 and will not cause adverse light reflection withdriver 50. - Double
curved mirror 62 is attached to the car's driver and passenger side view mirrors 12 with thereflective surfaces FIG. 9 . This is to enable an image from along driverside viewing area 70 to be reflected into the car's driver or passenger mirrors 12 and then from the car side view mirrors 12 into the driver's field ofview 64. Doublecurved mirror 62 can also be attached toside view mirror 12 in a configuration such that doublecurved mirror 12 is protruding below the lower edge of theside view mirror 12 such that the lower edge of theside view mirror 12 eliminates the possibility of lights from an oncoming car being reflected onto the curved surface of your device and thusly, into the driver's eyes. - Preferably,
double curve mirror 62 is in a housing. The housing can be fixed position housing or can be a movable and adjustable housing. In one embodiment, seen inFIG. 14 housing 86 on a balljoint pivot 90 attached to a base 88 that is attached toside view mirror 12.Housing 86 is adjustable in all directions. The adjustable housing includes a ball joint, a bellows style tubular stem (like the Snake Light) or even a wire molded into a flexible plastic stem which could be bent to achieve mirror adjustment. The object of any mirror adjusting system, including the present invention should be to include adjustment in two axes. - In one embodiment, the double
curved mirror 62 of the present invention can be described according toFIG. 19 : - A convexly curved mirror, as seen in
FIG. 19 , is a mirror in which the reflective surface bulges toward the light source. Convex mirrors reflect light away from their center of curvature. Such mirrors always form a virtual image, since the focus F and the centre ofcurvature 2F are both imaginary points inside the mirror's curvature. A collimated or parallel beam of light diverges after reflection from a convexly curved mirror since the normal to the surface differs at each spot on the mirror's surface. These features make convex mirrors ideal for capturing a wider field of view than a simple planar mirror. Everything appears smaller in such a mirror and the reflected image is always upright. - As to other types of convexly curved mirrors; a convex parabolic mirror will reflect a beam of collimated light to make it appear as if it were radiating from the focal point, or conversely, reflect rays directed toward the focus as a collimated beam. A convex elliptical mirror will reflect light directed towards one focus as if it were radiating from the other focus, both of which are behind the mirror. A convex hyperbolic mirror will reflect rays emanating from the focal point in front of the mirror as if they were emanating from the focal point behind the mirror.
- In one embodiment, the properties of the mirror are calculated as in
FIG. 20 , distances are for illustrative purposes only and do not limit the invention: - FIELD OF VIEW ENCOMPASSED (distance A-X)=approximately 7 feet. “A” being adjustable near the front of car and front tire. B being below the side view mirror and X being at the below the driver and towards the rear of the driver door.
- VIRTUAL IMAGE SIZE WHICH WOULD BE REFLECTED TOWARDS DRIVER MIRROR (2×Distance A′-B′ depicted by the red line)=approximately 5″
- WIDTH ACROSS ARC OF MIRROR (Distance D-E, D not shown but on the opposite edge of “E”)=approximately 6.8″
- With any mirror, the angle of incidence “I” equals the angle of reflection “r”.
- While the invention has been described in its preferred form or embodiment with some degree of particularity, it is understood that this description has been given only by way of example and that numerous changes in the details of construction, fabrication, and use, including the combination and arrangement of parts, may be made without departing from the spirit and scope of the invention.
Claims (6)
1. A vehicle mirror system comprising:
a vehicle having a side view mirror; and
a double curved reflecting mirror mounted on said side view mirror and having a reflective surface facing said side view mirror, said double curved reflecting mirror being oriented to reflect an image of an area along a lower perimeter of a vehicle such that said image is viewable by a driver operating the vehicle
2. The system of claim 1 wherein said double curved mirror is in a housing and said housing is attached to a vehicle side view mirror or a vehicle side view mirror housing.
3. The system of claim 1 wherein said double curved side view mirror has a first curvature along a vertical axis and a second curvature along a horizontal axis.
4. The system of claim 1 wherein said double curved side view mirror has a first curvature along a vertical axis and a second curvature along a horizontal axis, said first curvature and said second curvature being of unequal degrees of curvature.
5. The system of claim 1 wherein said double curved mirror is in a housing that is adjustable.
6. A method of viewing an area along the lower perimeter of a vehicle with a side view mirror while operating the vehicle, comprising:
providing a double curved reflecting mirror attached to a vehicle side view mirror, said double curved mirror having a reflective surface facing a vehicle side view mirror; and
reflecting an image of an area onto the side view mirror with said double curved reflecting mirror such that a vehicle operator in a vehicle operating position can view said image; wherein said image includes a surface on which said vehicle resides.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US12/643,275 US8317346B2 (en) | 2005-11-07 | 2009-12-21 | Vehicle side view mirror system |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US73421305P | 2005-11-07 | 2005-11-07 | |
US59236106A | 2006-11-03 | 2006-11-03 | |
US12/643,275 US8317346B2 (en) | 2005-11-07 | 2009-12-21 | Vehicle side view mirror system |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US59236106A Continuation-In-Part | 2005-11-07 | 2006-11-03 |
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US20100208373A1 true US20100208373A1 (en) | 2010-08-19 |
US8317346B2 US8317346B2 (en) | 2012-11-27 |
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US12/643,275 Expired - Fee Related US8317346B2 (en) | 2005-11-07 | 2009-12-21 | Vehicle side view mirror system |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9358928B2 (en) * | 2014-05-15 | 2016-06-07 | Kevin Anthony Smith | Forward and rearward viewing mirror device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2210147A (en) * | 1936-07-27 | 1940-08-06 | James E Griffith | Support for automobile accessories |
US6357883B1 (en) * | 1999-12-02 | 2002-03-19 | Ford Global Tech., Inc. | Vehicle image acquisition and display assembly |
US20030117731A1 (en) * | 2001-04-24 | 2003-06-26 | Platzer George E | Compound automotive rearview mirror |
US6935758B2 (en) * | 2003-11-10 | 2005-08-30 | Morgan Plaster | Driver observation system |
-
2009
- 2009-12-21 US US12/643,275 patent/US8317346B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2210147A (en) * | 1936-07-27 | 1940-08-06 | James E Griffith | Support for automobile accessories |
US6357883B1 (en) * | 1999-12-02 | 2002-03-19 | Ford Global Tech., Inc. | Vehicle image acquisition and display assembly |
US20030117731A1 (en) * | 2001-04-24 | 2003-06-26 | Platzer George E | Compound automotive rearview mirror |
US6935758B2 (en) * | 2003-11-10 | 2005-08-30 | Morgan Plaster | Driver observation system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9358928B2 (en) * | 2014-05-15 | 2016-06-07 | Kevin Anthony Smith | Forward and rearward viewing mirror device |
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US8317346B2 (en) | 2012-11-27 |
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